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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...s and got the whole thing to compile. Here is the result:
+ (NSArray*)getRGBAsFromImage:(UIImage*)image atX:(int)x andY:(int)y count:(int)count
{
NSMutableArray *result = [NSMutableArray arrayWithCapacity:count];
// First get the image into your data buffer
CGImageRef imageRef = [imag...
Can you set a border opacity in CSS?
...-transparent. The best way to make the border semi-transparent is with the rgba color format. For example, this would give a red border with 50% opacity:
div {
border: 1px solid rgba(255, 0, 0, .5);
-webkit-background-clip: padding-box; /* for Safari */
background-clip: padding-box; /* ...
Making text background transparent but not text itself
...
Don't use opacity for this, set the background to an RGBA-value instead to only make the background semi-transparent. In your case it would be like this.
.content {
padding:20px;
width:710px;
position:relative;
background: rgb(204, 204, 204); /* Fallback for ol...
Convert string in base64 to image and save on filesystem in Python
...IL import Image
from base64 import decodestring
image = Image.fromstring('RGB',(width,height),decodestring(imagestr))
image.save("foo.png")
Since the imagestr is just the encoded png data
from base64 import decodestring
with open("foo.png","wb") as f:
f.write(decodestring(imagestr))
...
Image fingerprint to compare similarity of many images
...ate fingerprints of many images (about 100.000 existing, 1000 new per day, RGB, JPEG, max size 800x800) to compare every image to every other image very fast. I can't use binary compare methods because also images which are nearly similar should be recognized.
...
Android EditText delete(backspace) key event
... public void setRandomBackgroundColor() {
setBackgroundColor(Color.rgb(r.nextInt(256), r.nextInt(256), r
.nextInt(256)));
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
return new ZanyInputConnection(super.onCreateInputC...
hdwiki后台设置默认风格无效 - 更多技术 - 清泛网 - 专注C/C++及内核技术
hdwiki后台设置默认风格无效在网站前台首页点清除Cookies即可生效。在网站前台首页点“清除Cookies”即可生效。hdwiki 设置 无效
Why is there an unexplainable gap between these inline-block div elements? [duplicate]
...ainer {
display: inline-block;
position: relative;
background: rgb(255, 100, 0);
margin: 0;
width: 40%;
height: 100px;
float: left;
}
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...
Setting different color for each series in scatter plot on matplotlib
...ray of colour name string, array of float number with colour map, array of RGB or RGBA.
this answer is dedicate to @Oxinabox's endless passion for correcting the 2013 version of myself in 2015.
you have two option of using scatter command with multiple colour in a single call.
as pylab.scatter...
c++ 设置按钮可用/不可用 - C/C++ - 清泛网 - 专注C/C++及内核技术
c++ 设置按钮可用/不可用CButton m_btn;...m_btn.EnableWindow(FALSE); 变灰m_btn.EnableWindow(TRUE); 可用CButton m_btn;
...
m_btn.EnableWindow(FALSE); //变灰
m_btn.EnableWindow(TRUE); //可用c++ 按钮 可用 不可用